Ok. At any rate, it was the same recipe as the previous batch, which hit the target exactly. After 24-36 hours, there was no activity in the airlock. 12 hours later, it was bubbling nicely. another 12 hours, and the airlock was just about ready to blow off, and there was krausen running down the carboy. Wish I'd thought ahead to put on a blow-off tube. It's looking good!